A common part of my workflow is to take a screenshot of my work, which saves the screenshot to the clipboard, and then I paste it in an email or chat window for others to comment on. It's faster than exporting the document. However, it still takes a second to click and drag the screenshot area.

I would like a feature (with a keyboard shortcut) to make a low-res PNG of the artboard (about as big as the view on my screen, i.e a screenshot) and save it to the clipboard for easy sharing.